This is my first time posting here. I did a lot of research for tires; on these forums as well as many other websites and such. I recently purchased a 2014 Big Horn with only 19,000 miles but, I hated the factory Goodyears. I found a Merchant's Tire near me that had Cooper Discoverer RTX's on sale for buy two-get two free. Total out-the-door price was $645.00 for all four tires, alignment, and lifetime balance/rotation/flat repair.
I have a little over 1500 miles on them now and, so far, I'm very pleased. It's been raining around here for nearly 20 days straight and they do extremely well. Road noise is almost non-exsistant. As far as off-road traction, the only thing I've had it in so far has been wet grass/topsoil mud and they did better than expected to say the least. They self-clean exceptionally well with very few small stones making it back out to the hard road. Dry road handling has been a bit better than expected with little to no noticeable roll over from the sidewalls on hard turns and track straight down the highway.
I stayed with the factory size of 275/60 -R20 in case that was an upcoming question.
All-in-all, I'm very satisfied with the RTX's. I ran my former 2005 Ram 1500 workhorse over 230,000 miles and went from Goodyears to Coopers to Falkners. I've always had good servie from the Coopers; generally avaraged around 40,000 miles out of the HT Plus. Hopefully the RTX's will last at least that long.